Fluid mechanics

 Surface Tension – MCQs for Competitive Exams  multiple-choice questions on Surface Tension, curated for exams like  Surface Tension – 50 MCQs for Competitive Exams multiple-choice questions on Surface Tension, curated for exams like SSC JE, RRB JE, State PSCs, and other engineering entrance/technical exams. Questions include conceptual, numerical, and application-based patterns with answers. 1.       1. Which unit is used to measure surface tension? ·         A. N/m² ·         B. N/m ·         C. N ·         D. m/N 👉 Answer: B 2.       2. Surface tension is due to: ·         A. Adhesion ·         B. Gravity ·         C. Cohesion ·         D. ...

🌊 Surface Tension: Concepts, Formulas & Exam Practice Questions Author: Vivek Kumar | Category: Engineering Physics | Target Exams: SSC JE, RRB JE, PSU, State PSC 🔍 What is Surface Tension? Surface tension is the property of a liquid surface that allows it to resist an external force due to cohesive nature of its molecules. It arises because molecules at the surface experience a net inward force , making the surface behave like a stretched elastic sheet. 🧠 Why It Matters in Competitive Exams? Surface tension is a commonly tested topic in engineering exams under physics or fluid mechanics. Questions typically involve: Conceptual understanding Formula-based numerical problems Application-based MCQs 📘 Key Concepts and Definitions Concept Description Cohesion Attraction between molecules of the same substance Adhesion Attraction between molecules of different substances Surface Tension (T or S) Force per unit length acting along the surface of a liquid...

  For a bubble with two surfaces providing tension, the pressure relationship is: This gives

  Surface tension  is the tendency of fluid surfaces to shrink into the minimum surface area possible. Have you noticed when you fill a glass up to the brim with water, you can still add a few more drops till it spills out? Or have you ever broken a thermometer and observed how the fallen mercury behaves? All these happen due to the surface tension of the surface.  Let us understand the concept,  surface tension definition  along with its SI unit, formula and examples. What is Surface Tension? According to the  definition of surface tension , it  is the phenomenon that occurs when the surface of a liquid is in contact with another phase (it can be a liquid as well). Liquids tend to acquire the least surface area possible. The surface of the liquid behaves like an elastic sheet. “Surface tension is the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimise...